Based on velero upstream issue: https://github.com/vmware-tanzu/velero/issues/6526

Currently it is not possible when working with CSI snapshots and the DataMover to use incremental or differential backups as every backup is a full backup, incrementing the time it takes per backup and also consuming more storage space in the target S3 bucket

Describe the problem/challenge you have

I've been having a look at the Volume Snapshot Data Movement Design (https://github.com/vmware-tanzu/velero/blob/main/design/volume-snapshot-data-movement/volume-snapshot-data-movement.md) and I'd like to suggest to ensure incremental or differential backups will be available when implementing the Snapshot Data Mover.

Describe the solution you'd like

I'd like to be able to work with incremental or differential backups when working with the Snapshot Data Mover as it is much more efficient than doing full backups every time. When working with incremental or differential backup as you don't need to copy as much data as with full backups the solution is more efficient. You also require less storage space and shorter backup windows.

Anything else you would like to add:

If we are currently working on providing incremental or differential backups in the Snapshot Data Mover or this is a duplicate request, sorry for creating a new one and feel free to close it.